CN203095822U - High sludge dewatering drying device - Google Patents

Abstract

The patent of the utility model relates to high sludge dewatering, and in particular relates to a high sludge dewatering drying device. The drying device comprises a fixed pushing frame and a movable pushing frame, wherein filter partition boards are uniformly and continuously distributed between the fixed pushing frame and the movable pushing frame; a high pressure filter plate is arranged between every two filter partition boards; extrusion hoses are distributed in the high pressure filter plates in a communicating way; filter cloth layers which are fixed with the high pressure filter plates are respectively arranged on two sides of each extrusion hose; one end of each extrusion hose is sealed, and the other ends of the extrusion hoses stretch out of the high pressure filter plates; and sludge feeding holes communicated with the fixed pushing frame, the filter partition boards and the high pressure filter plates are respectively arranged in the fixed pushing frame, the filter partition boards and the high pressure filter plates. The high sludge dewatering drying device is compact in structure, and concise and efficient in drying step.

Description

Drying device for highly dehydrated sludge

technical field

The utility model patent relates to a highly dehydrated sludge, in particular to a drying device for highly dehydrated sludge.

Background technique

The traditional plate and frame filter press only relies on the pressure of the mud inlet pump to form mud cake in the filter chamber between the plate and frame during filtration. Since it does not have the function of reprocessing, the moisture content of the mud cake after treatment is as high as 85% to 90%. , cannot meet the requirements of deep burial or incineration, and secondary treatment is required. The improved diaphragm filter press currently on the market has the following disadvantages due to the limitations of the diaphragm material and process, although the re-press filtration process has been added to the traditional filter press:

1. First, the pressure of the filter press should not be too high.

2. Second, due to the small expansion coefficient of the diaphragm technology, the compression space is limited.

3. The third is that due to the fixed space of the diaphragm, the high pressure during the second filter press can only be partially applied to the mud cake in the filter chamber.

4. Fourth, due to the above defects and deficiencies, if the mud cake formed in the filter chamber has a high moisture content (95% to 90%) during the second press, the effect of the second press is not great.

Therefore, among the filter press products sold in the market at present, due to the limitation of its own technology and process, as well as the different conditions such as water quality and sludge characteristics, the diaphragm filter press can only re-press the mud in the original filter chamber. Double the solid content of the cake (the ideal moisture content is about 70%), which cannot fully meet the needs of customers.

Utility model content

The utility model mainly solves the deficiencies in the prior art, and provides an economical and convenient sludge dehydration process technology, a one-time sludge dehydration device for highly dewatered sludge with a moisture content below 50%.

The above-mentioned technical problems of the utility model are mainly solved by the following technical solutions:

A drying device for high degree of sludge dehydration, comprising a fixed push frame and a movable push frame, between the fixed push frame and the movable push frame are provided with evenly and continuously distributed filter partitions, between the filter partitions A high-pressure filter plate is provided, and the high-pressure filter plate is provided with extruded hoses distributed in a connected shape. The two sides of the extruded hoses are respectively provided with filter cloth layers fixed to the high-pressure filter plate. One end of the extruded hose is closed, and the other end of the extruded hose extends out of the high-pressure filter plate, and the fixed push frame, the filter partition and the high-pressure filter plate are respectively equipped with sludge feed hole.

As a preference, concave sludge retention tanks are respectively provided on both sides of the filter partition, the cross-section of the sludge retention tank is trapezoidal, and the filter cloth layer and the extruded soft The pipes are arranged in close contact with each other, and a sludge expansion tank is arranged between the filter cloth layer and the high-pressure filter plate, and the diameter of the extruded hose is 25-65 mm.

Preferably, the extruded hose is in communication with the pressure inlet pipe.

Main features and advantages of the utility model:

The high-pressure hose used in the utility model can withstand pressure of 3.0MPa, and can be squeezed again with a higher pressure, which is difficult for the current diaphragm filter press, so the mud cake after pressing can pass to a water content below 50%. . The high-pressure hose used can be re-pressed with different pressures (1.5MPa～2.5MPa) according to the characteristics and needs of different customers' water quality and sludge, so as to achieve economical efficiency. The high-pressure hose is laid flat in the filter chamber. Since the expansion coefficient of the hose is 4 to 9 times, there is no space limitation, and the high pressure in the hose can all act on the mud cake in the filter chamber evenly, achieving the purpose of high pressure pressing and obtaining a higher solid content. The high-pressure hose used has a large expansion coefficient, and the volume after expansion is larger than the volume of the filter chamber. The moisture content of the mud cake in the filter chamber can be squeezed to meet the design requirements of the customer (moisture content 50%) at one time.

Therefore, the highly dewatered sludge drying device of the present utility model has a compact structure, and the drying steps are simple and efficient.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a schematic structural view of the high-pressure filter plate in Fig. 1 .

Detailed ways

The technical solutions of the present utility model will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

Embodiment 1: As shown in Figure 1 and Figure 2, a drying device for highly dewatered sludge comprises a fixed push frame 1 and a mobile push frame 2, and the fixed push frame 1 and the mobile push frame 2 are provided with The filter partitions 3 that are evenly and continuously distributed, and the high-pressure filter plates 4 are arranged between the filter partitions 3, and the extruded hoses 5 that are distributed in a connected shape are arranged in the described high-pressure filter plates 4. Both sides of the squeeze hose 5 are respectively provided with filter cloth layers 6 fixed to the high-pressure filter plate 4, one end of the squeeze hose 5 is closed, and the other end of the squeeze hose 5 extends Out of the high-pressure filter plate 4, the fixed push frame 1, the filter partition 3 and the high-pressure filter plate 4 are respectively provided with sludge feeding holes 7 communicating with them.

Both sides of the filter partition 3 are respectively provided with concave sludge retention tanks 8, the cross section of the sludge retention tank 8 is trapezoidal, and the filter cloth layer 6 and the extruded The hoses 5 are attached and distributed, and the sludge expansion tank 10 is arranged between the filter cloth layer 6 and the high-pressure filter plate 4, and the diameter of the extruded hose 5 is 25mm. The extruded hose 5 communicates with the pressure inlet pipe 9 .

Embodiment 2: A drying device for high degree of sludge dehydration, characterized in that: it includes a fixed push frame 1 and a movable push frame 2, and the fixed push frame 1 and the movable push frame 2 are provided with uniform and continuous distribution. The filter partition 3 is provided with a high-pressure filter plate 4 between the filter partition 3, and the extruded hose 5 distributed in a connected shape is arranged in the described high-pressure filter plate 4. The extruded hose 5 The filter cloth layer 6 fixed with the high-pressure filter plate 4 is respectively arranged on both sides of the two sides, and one end of the extruded hose 5 is closed, and the other end of the extruded hose 5 extends out of the high-pressure filter plate 4 , the fixed push frame 1, the filter partition 3 and the high-pressure filter plate 4 are respectively provided with sludge feeding holes 7 communicating with them.

Both sides of the filter partition 3 are respectively provided with concave sludge retention tanks 8, the cross section of the sludge retention tank 8 is trapezoidal, and the filter cloth layer 6 and the extruded The hoses 5 are attached and distributed, and the sludge expansion tank 10 is arranged between the filter cloth layer 6 and the high-pressure filter plate 4, and the diameter of the extruded hose 5 is 40mm. The extruded hose 5 communicates with the pressure inlet pipe 9 .

Embodiment 3: A drying device for high degree of sludge dehydration, characterized in that: it includes a fixed push frame 1 and a movable push frame 2, and the fixed push frame 1 and the movable push frame 2 are provided with uniform and continuous distribution. The filter partition 3 is provided with a high-pressure filter plate 4 between the filter partition 3, and the extruded hose 5 distributed in a connected shape is arranged in the described high-pressure filter plate 4. The extruded hose 5 The filter cloth layer 6 fixed with the high-pressure filter plate 4 is respectively arranged on both sides of the two sides, and one end of the extruded hose 5 is closed, and the other end of the extruded hose 5 extends out of the high-pressure filter plate 4 , the fixed push frame 1, the filter partition 3 and the high-pressure filter plate 4 are respectively provided with sludge feeding holes 7 communicating with them.

Both sides of the filter partition 3 are respectively provided with concave sludge retention tanks 8, the cross section of the sludge retention tank 8 is trapezoidal, and the filter cloth layer 6 and the extruded The hoses 5 are attached and distributed, and the sludge expansion tank 10 is arranged between the filter cloth layer 6 and the high-pressure filter plate 4, and the diameter of the extruded hose 5 is 65mm. The extruded hose 5 communicates with the pressure inlet pipe 9 .

Claims (3)

1. A drying device for highly dewatered sludge, characterized in that it includes a fixed push frame (1) and a mobile push frame (2), and the fixed push frame (1) and the mobile push frame (2) are arranged between There are filter partitions (3) distributed uniformly and continuously, and high-pressure filter plates (4) are arranged between the filter partitions (3), and high-pressure filter plates (4) are provided with connected filter plates (4). Squeeze the hose (5), the two sides of the squeeze hose (5) are respectively provided with a filter cloth layer (6) fixed to the high-pressure filter plate (4), and the squeeze hose (5) ) is closed, the other end of the extrusion hose (5) extends out of the high-pressure filter plate (4), the fixed push frame (1), filter partition (3) and high-pressure filter plate ( 4) are respectively provided with sludge feeding holes (7) connected thereto. 2. The drying device for high sludge dehydration according to claim 1, characterized in that: the two sides of the filter partition (3) are respectively provided with concave sludge retention tanks (8), The cross-section of the sludge retention tank (8) is trapezoidal, the filter cloth layer (6) and the extruded hose (5) are closely distributed, and the filter cloth layer (6) and the Sludge expansion tanks (10) are arranged between the high-pressure filter plates (4), and the diameter of the extrusion hose (5) is 25-65mm. 3. The drying device for high degree of sludge dehydration according to claim 1 or 2, characterized in that: the squeeze hose (5) is connected to the inlet pressure pipe (9).

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